diff --git a/configure.ac b/configure.ac
index 58ee59c..93fb370 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@
 dnl Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.59)
-AC_INIT(cosfs, 1.0.19-beta)
+AC_INIT(cosfs, 1.0.20)
 AC_CONFIG_HEADER([config.h])
 
 AC_CANONICAL_SYSTEM
diff --git a/src/s3fs.cpp b/src/s3fs.cpp
index fff52f9..60b4e40 100644
--- a/src/s3fs.cpp
+++ b/src/s3fs.cpp
@@ -1193,7 +1193,7 @@ static int rename_object(const char* from, const char* to)
   }
   s3_realpath = get_realpath(from);
 
-  meta["x-cos-copy-source"]        = urlEncode(service_path + bucket + "-" + appid + get_realpath(s3_realpath.c_str()));
+  meta["x-cos-copy-source"]        = urlEncode(service_path + bucket + "-" + appid + s3_realpath.c_str());
   meta["Content-Type"]             = S3fsCurl::LookupMimeType(string(to));
   meta["x-cos-metadata-directive"] = "REPLACE";
 
diff --git a/test/move_test.py b/test/move_test.py
new file mode 100644
index 0000000..5db913e
--- /dev/null
+++ b/test/move_test.py
@@ -0,0 +1,38 @@
+import os
+import random
+import shutil
+import sys
+
+mountpoint = sys.argv[1]
+
+filename = "cosfs_test_%d" % random.randint(0, 1000000)
+origin_file = mountpoint + filename
+
+data = "hello"
+# suppose the "multipart_size" is set to 1 MB.
+data = '0' * (2 * 1024 * 1024 + 12)
+f = open(origin_file, 'w')
+f.write(data)
+f.flush()
+
+origin_files = os.listdir(mountpoint)
+dest_path = os.getcwd() + "/"
+
+for g in origin_files:
+    shutil.move(mountpoint + g, dest_path)
+
+    sz = os.stat(dest_path + g).st_size
+    os.remove(dest_path + g)
+    assert sz == len(data), "%d, %d"%(sz, len(data))
+
+
+data  = '0' * (5 * 1024 * 1024 * 1024 + 12)
+f = open(origin_file, 'w')
+f.write(data)
+f.flush()
+for g in origin_files:
+    shutil.move(mountpoint + g, dest_path)
+
+    sz = os.stat(dest_path + g).st_size
+    os.remove(dest_path + g)
+    assert sz == len(data), "%d, %d"%(sz, len(data))
\ No newline at end of file